diff --git a/src/source.rs b/src/source.rs
index 14d3911..9206766 100644
--- a/src/source.rs
+++ b/src/source.rs
@@ -160,7 +160,7 @@ fn validate_placeholders(config: &Templated) -> Result<(), ConfigError> {
   for name in config.placeholders.keys() {
     if !config.template.contains(&format!("${{{name}}}")) {
       return Err(ConfigError::BadSourceTemplate(format!(
-        "placeholder %{{{name}}}% is not present in template",
+        "placeholder ${{{name}}} is not present in template",
       )));
     }
   }